Motorists in the Montreal area should prepare for major obstructions over the weekend.

HIGHWAY 19 / PAPINEAU-LEBLANC BRIDGE

Friday 11 p.m. to Monday 5 a.m.

In both directions

Between Laval and Montreal (Ahuntsic-Cartierville district), complete closure of the Papineau-Leblanc Bridge.

Detours:

Northbound: on Henri-Bourassa Boulevard, via the Pie-IX (R-125) or Viau (R-335) and De la Concorde Boulevard bridges. For trucks, continue to A-440.

Southbound: on the A-440 service road eastbound, via the Pie-IX Bridge (R-125) or westbound, via the Médéric-Martin Bridge (A-15).

2. A-19 and Papineau-Leblanc Bridge, from March 20 to 23 (CNW Group/Ministère des Transports et de la Mobilité durable)

Default: Starting at 10:30 p.m.

Access from A-440 East and West for A-19 South.

Access from Saint-Martin, de la Concorde and Lévesque boulevards to A-19 south.

Note: access to Saint-Martin Boulevard from the A-440 (east and west) will be maintained.

1. Weekend obstructions, March 20 to 23 (CNW Group/Ministry of Transport and Sustainable Mobility)

To be expected: from Monday 5 a.m. until the end of 2026, 2 lanes of traffic available in each direction on the bridge, at all times.

Also, from Monday 5 a.m. until August 2026, closure of the ramp leading from Lévesque Boulevard to A-19 South.

HIGHWAY 25 / LOUIS-HIPPOLYTE-LA FONTAINE TUNNEL

Direction SOUTH

Friday 11 p.m. to Saturday 8 a.m.

Complete closure of the tunnel between Exit 5 (Sherbrooke Street) in Montreal and the R-132 in Longueuil

3. A-25, Sherbrooke and Souligny sector, from March 20 to 21 (CNW Group/Ministry of Transport and Sustainable Mobility)

Detour: via Dickson Street South and Notre-Dame Avenue and Papineau Avenue / Jacques Cartier Bridge. For trucks (+4.25 m), via Dickson Street North and Hochelaga Street, Assomption Boulevard, Sherbrooke Street and Pie-IX Boulevard South.

By default: 30 minutes before, the entrances to Sherbrooke, Tellier and des Futaille streets.

Souligny Avenue: closure of the avenue in both directions, between Dickson and Honoré-Beaugrand streets. Detour: via Hochelaga Street.

REMINDER: The clear height in the tunnel is now 4.3 metres, but it is still recommended to provide a minimum safety margin of 10 cm. Before you hit the road, check the height of your load.

4. A-25, Louis-Hippolyte-La Fontaine Bridge-Tunnel sector, from March 20 to 21 (CNW Group/Ministry of Transport and Sustainable Mobility)

NORTH DIRECTION

Friday 11 p.m. to Saturday 8 a.m.

Complete closure of the tunnel between exit 90 (R-132) on the A-20 west in Longueuil and the Sherbrooke Street access on the A-25 north in Montreal

Detour: via Hwy. 132 West, exit 82 / Jacques-Cartier Bridge, downtown exit towards De Lorimier Avenue South, Notre-Dame, Curatteau and De Boucherville streets. Trucks, via Pie-IX Boulevard, Sherbrooke and De Boucherville Streets.

Default: 30 minutes before

The access ramps to the R-132 east and west (exits 89-N).
Detour eastbound: U-turn at exit 137 (De Montarville Boulevard).

Access from rue de l’Île-Charron.
Detour: via A-25 south and R-132 west.

Channeling of the access to Île Charron from the Marie-Victorin Boulevard accesses to the A-25 north.

Access from Hochelaga
Street Detour: via De Boucherville Street.

TO PLAN

Avenue De Lorimier

In Montreal (Ville-Marie district), on De Lorimier Avenue, between René-Lévesque and De Maisonneuve boulevards, complete closure northbound and partial closure of 1 lane out of 3 southbound, Monday to Wednesday from 7 a.m. to 7 p.m. and Thursday from 7 a.m. to 6 p.m., for a period of 6 weeks:

Note: On René-Lévesque Boulevard East, closure of the left-turn lane for De Lorimier Avenue northbound.

Water main rehabilitation work, under the responsibility of the City of Montreal.

Viger Avenue East

In Montreal (Ville-Marie district), on Viger Avenue East, between the access ramp for Hwy. 136 West and Wolfe Street, starting Friday, March 20 and for a period of 2 weeks:

Partial closure of 1 lane out of 3 during the morning rush hour, from 5 a.m. to 10 a.m.

Partial closure of 2 lanes out of 3, from 10 a.m. to 10 p.m. (Monday to Thursday) and at 5 a.m. the next day (Friday to Sunday).

The access ramp to Hwy. 136 West will remain open, according to the same schedule.

Optional route: via René-Lévesque Boulevard East.

Replacement work on a watermain under the responsibility of the City of Montreal.

Route 138 in Montreal (arr. LaSalle)

In Montreal (LaSalle district), partial closure of 1 out of 2 lanes in exit 2 of Hwy. 138, in both directions, from March 20 to April 18, 2026.

Long-term work on Clément Street, at Louis-Fortier Street, under the responsibility of the City of Montreal.

St. Patrick’s Day Parade (Sunday, March 22, 2026)

In Montreal (Ville-Marie district), complete closure of de Maisonneuve Boulevard, between Saint-Marc and Jeanne-Mance streets, Sunday from 8 a.m. to 5 p.m.

Highway 20 (Jean-Lesage), between Sainte-Julie and Beloeil

As of March 22, work will resume on the construction of a reserved lane on Highway 20 East (Jean-Lesage), between Sainte-Julie and Beloeil. See the press release.

Interchange of highways 13 and 520 in Montreal and Dorval

Over the next few months, major work will be carried out in the area of the interchange of highways 13 and 520 in Montreal and Dorval.

In the event of adverse weather conditions or operational constraints, work may be cancelled or modified. Check the Quebec511.info regularly for current and upcoming obstructions.